XMLRecognizer.hpp
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上传日期:2007-01-10
资源大小:6948k
文件大小:7k
源码类别:
xml/soap/webservice
开发平台:
C/C++
- /*
- * The Apache Software License, Version 1.1
- *
- * Copyright (c) 1999-2000 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xerces" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation, and was
- * originally based on software copyright (c) 1999, International
- * Business Machines, Inc., http://www.ibm.com . For more information
- * on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- /*
- * $Id: XMLRecognizer.hpp,v 1.8 2000/08/30 22:21:28 andyh Exp $
- */
- #if !defined(XMLRECOGNIZER_HPP)
- #define XMLRECOGNIZER_HPP
- /**
- * This class provides some simple code to recognize the encodings of
- * XML files. This recognition only does very basic sensing of the encoding
- * in a broad sense. Basically its just enough to let us get started and
- * read the XMLDecl line. The scanner, once it reads the XMLDecl, will
- * tell the reader any actual encoding string it found and the reader can
- * update itself to be more specific at that point.
- */
- class XMLPARSER_EXPORT XMLRecognizer
- {
- public :
- // -----------------------------------------------------------------------
- // Class types
- //
- // This enum represents the various encoding families that we have to
- // deal with individually at the scanner level. This does not indicate
- // the exact encoding, just the rough family that would let us scan
- // the XML/TextDecl to find the encoding string.
- //
- // The 'L's and 'B's stand for little or big endian. We conditionally
- // create versions that will automatically map to the local UTF-16 and
- // UCS-4 endian modes.
- //
- // OtherEncoding means that its some transcoder based encoding, i.e. not
- // one of the ones that we do internally. Its a special case and should
- // never be used directly outside of the reader.
- //
- // NOTE: Keep this in sync with the name map array in the Cpp file!!
- // -----------------------------------------------------------------------
- enum Encodings
- {
- EBCDIC = 0
- , UCS_4B = 1
- , UCS_4L = 2
- , US_ASCII = 3
- , UTF_8 = 4
- , UTF_16B = 5
- , UTF_16L = 6
- , Encodings_Count
- , Encodings_Min = EBCDIC
- , Encodings_Max = UTF_16L
- , OtherEncoding = 999
- #if defined(ENDIANMODE_BIG)
- , Def_UTF16 = UTF_16B
- , Def_UCS4 = UCS_4B
- #else
- , Def_UTF16 = UTF_16L
- , Def_UCS4 = UCS_4L
- #endif
- };
- // -----------------------------------------------------------------------
- // Public, const static data
- //
- // These are the byte sequences for each of the encodings that we can
- // auto sense, and their lengths.
- // -----------------------------------------------------------------------
- static const char fgASCIIPre[];
- static const unsigned int fgASCIIPreLen;
- static const XMLByte fgEBCDICPre[];
- static const unsigned int fgEBCDICPreLen;
- static const XMLByte fgUTF16BPre[];
- static const XMLByte fgUTF16LPre[];
- static const unsigned int fgUTF16PreLen;
- static const XMLByte fgUCS4BPre[];
- static const XMLByte fgUCS4LPre[];
- static const unsigned int fgUCS4PreLen;
- static const char fgUTF8BOM[];
- static const unsigned int fgUTF8BOMLen;
- // -----------------------------------------------------------------------
- // Encoding recognition methods
- // -----------------------------------------------------------------------
- static Encodings basicEncodingProbe
- (
- const XMLByte* const rawBuffer
- , const unsigned int rawByteCount
- );
- static Encodings encodingForName
- (
- const XMLCh* const theEncName
- );
- static const XMLCh* nameForEncoding(const Encodings theEncoding);
- protected :
- // -----------------------------------------------------------------------
- // Unimplemented constructors, operators, and destructor
- //
- // This class is effectively being used as a namespace for some static
- // methods.
- //
- // (these functions are protected rather than private only to get rid of
- // some annoying compiler warnings.)
- //
- // -----------------------------------------------------------------------
- XMLRecognizer();
- ~XMLRecognizer();
- void operator=(const XMLRecognizer&);
- };
- #endif